I developed a project using an STmicro F103RB Nucleo dev board using Atollic TrueStudio IDE.

The project is fairly simple, the resources used are: a single ADC and a single timer setup with 3 PWM outputs.Is is possible/feasible to port this code to the EzSBC2 (using TruStudio)? And if so, how would I go about it?(TrueStudio does not have a built-in project setup for the ezSBC2).

It will be possible, the question is how much effort is required. I don't know much about Truestudio other than that it exists. If it has support for the LPC1347 then it should not require to much work.

A look at the Atollic web site confirms that they have support for the LPC family of processors. I would define a new project with the LPC1347 as the target processor and see how far the ADC and PWM functions differ from the STM versions of the same functions. I would expect them to be very similar since ARM requires vendors to provide drivers for the Cortex family CMSIS format.